From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0975C8821 for ; Fri, 10 Mar 2023 15:02:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7FA23C433D2; Fri, 10 Mar 2023 15:02:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678460559; bh=egW0id/2GxR0x5DYz7fpM1U0TR/awPryNL9uOmWQ6FE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JJFLJlSXIf6bHFt9w0an7QUm4qk5jnhDI2EKx3yo3VCxmSo10ySkikQpIu0vaQaSq MizwQMx5nEdgxwHykDElc7k5qEkSwrnr5KUJthZCpOSdafsAiBXvSq/Ut/u1EaFLnV JjiXyuINDjk6NRlatHxb2lsJyg4haPg+oQW5hq+8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, kernel test robot , Jens Axboe Subject: [PATCH 5.10 374/529] io_uring: mark task TASK_RUNNING before handling resume/task work Date: Fri, 10 Mar 2023 14:38:37 +0100 Message-Id: <20230310133822.331319625@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230310133804.978589368@linuxfoundation.org> References: <20230310133804.978589368@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Jens Axboe commit 2f2bb1ffc9983e227424d0787289da5483b0c74f upstream. Just like for task_work, set the task mode to TASK_RUNNING before doing potential resume work. We're not holding any locks at this point, but we may have already set the task state to TASK_INTERRUPTIBLE in preparation for going to sleep waiting for events. Ensure that we set it back to TASK_RUNNING if we have work to process, to avoid warnings on calling blocking operations with !TASK_RUNNING. Fixes: b5d3ae202fbf ("io_uring: handle TIF_NOTIFY_RESUME when checking for task_work") Reported-by: kernel test robot Link: https://lore.kernel.org/oe-lkp/202302062208.24d3e563-oliver.sang@intel.com Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- io_uring/io_uring.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -2465,8 +2465,10 @@ static inline bool io_run_task_work(void * notify work that needs processing. */ if (current->flags & PF_IO_WORKER && - test_thread_flag(TIF_NOTIFY_RESUME)) + test_thread_flag(TIF_NOTIFY_RESUME)) { + __set_current_state(TASK_RUNNING); tracehook_notify_resume(NULL); + } if (test_thread_flag(TIF_NOTIFY_SIGNAL) || current->task_works) { __set_current_state(TASK_RUNNING); tracehook_notify_signal();